EP2818386A1 - Dispositif de direction assistée électrique et appareil d'accouplement d'arbres utilisé dans celui-ci - Google Patents

Dispositif de direction assistée électrique et appareil d'accouplement d'arbres utilisé dans celui-ci Download PDF

Info

Publication number
EP2818386A1
EP2818386A1 EP13751585.4A EP13751585A EP2818386A1 EP 2818386 A1 EP2818386 A1 EP 2818386A1 EP 13751585 A EP13751585 A EP 13751585A EP 2818386 A1 EP2818386 A1 EP 2818386A1
Authority
EP
European Patent Office
Prior art keywords
worm
joint
shaft
caps
electric motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13751585.4A
Other languages
German (de)
English (en)
Other versions
EP2818386B1 (fr
EP2818386A4 (fr
Inventor
Shinraku Yoshikawa
Tetsurou SHIMIZU
Katsumi SHIMODA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KYB Corp
Original Assignee
Kayaba Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kayaba Industry Co Ltd filed Critical Kayaba Industry Co Ltd
Publication of EP2818386A1 publication Critical patent/EP2818386A1/fr
Publication of EP2818386A4 publication Critical patent/EP2818386A4/fr
Application granted granted Critical
Publication of EP2818386B1 publication Critical patent/EP2818386B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0403—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by constructional features, e.g. common housing for motor and gear box
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0409—Electric motor acting on the steering column
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
    • F16D3/12—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted for accumulation of energy to absorb shocks or vibration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
    • F16D3/64—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising elastic elements arranged between substantially-radial walls of both coupling parts
    • F16D3/68—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising elastic elements arranged between substantially-radial walls of both coupling parts the elements being made of rubber or similar material

Definitions

  • the present invention relates to a shaft coupler that couples a worm shaft and an output shaft of an electric motor in an electric power steering device.
  • an electric power steering device is configured to bias a worm shaft toward a worm wheel side in order to reduce backlash of a worm reduction gear.
  • a worm shaft is tilted around a bearing that is provided on an electric motor side, axial misalignment is caused at the position where the worm shaft and an output shaft of the electric motor are coupled.
  • a joint that permits the axial misalignment and transmits rotational torque of the electric motor to the worm shaft becomes necessary.
  • WO2005/116473 discloses a shaft coupler including a coupling base body that is coupled to a rotating shaft, a coupling base body that is coupled to a steering shaft, and a pair of rotation transmission members that is arranged between the rotating shaft and the steering shaft via the coupling base bodies and that transmits rotation of the rotating shaft to the steering shaft, in which each of the rotation transmission members includes an annular base part and a pair of projection parts that is provided on the base part in an integrated manner to be projected in the radial direction.
  • the shaft coupler according to WO2005/116473 has such a shape that each of the rotation transmission members, as the joint, is formed by one component in which the base part and the projection parts are integrated. Therefore, when the worm shaft is tilted with respect to the output shaft of the electric motor, and the rotation transmission members permit the axial misalignment between the worm shaft and the output shaft of the electric motor, tilting torque of the worm shaft is increased and the worm shaft is not tilted smoothly. In this case, backlash reduction of the worm reduction gear becomes unstable.
  • the present invention is made in view of the above-described problem, and its object is to reduce the backlash of the worm reduction gear in a stable manner.
  • a shaft coupler that couples a worm shaft and an output shaft of an electric motor in an electric power steering device.
  • the shaft coupler includes a joint on a motor side that is connected to the output shaft of the electric motor, a joint on a worm side that is connected to the worm shaft, and a coupling that is provided between the joint on the motor side and the joint on the worm side and that is for transmitting rotational torque of the electric motor to the worm shaft, wherein the joint on the motor side and the joint on the worm side, each having a plurality of protrusion parts that extend in an axial direction, are arranged so that the protrusion parts are aligned alternately in a circumferential direction, and wherein the coupling is formed by a plurality of caps that are fitted to the protrusion parts of the joint on the motor side or the joint on the worm side.
  • a shaft coupler 100 couples a worm shaft 2 and an output shaft 7a of an electric motor 7 in an electric power steering device 101.
  • the electric power steering device 101 is a device that is mounted on a vehicle and that assists a steering force applied to a steering wheel by a driver.
  • the electric power steering device 101 is provided with a worm wheel 1 that is provided on a steering shaft linked to the steering wheel, the worm shaft 2 that meshes with the worm wheel 1, and the electric motor 7 that is coupled to the worm shaft 2 via the shaft coupler 100.
  • the electric motor 7 is driven, the worm shaft 2 is rotated, and the rotation of the worm shaft 2 is reduced in speed and transmitted to the worm wheel 1.
  • the worm wheel 1 and the worm shaft 2 form a worm reduction gear.
  • the shaft coupler 100 couples the worm shaft 2 and the output shaft 7a of the electric motor 7.
  • the shaft coupler 100 will be explained later in detail.
  • Torque outputted from the electric motor 7 is transmitted from the worm shaft 2 to the worm wheel 1 and given to the steering shaft as assist torque.
  • the torque outputted from the electric motor 7 corresponds to steering torque obtained by a computation based on a twist amount of a torsion bar that is twisted by relative rotation of an input shaft and an output shaft forming the steering shaft.
  • the worm shaft 2 is housed in a gear case 3 that is made of metal.
  • a teeth part 2a that meshes with a teeth part 1a of the worm wheel 1 is formed on a part of the worm shaft 2.
  • An opening part 3c is formed in the inner peripheral surface of the gear case 3 at the position corresponding to the teeth part 2a, and the teeth part 2a of the worm shaft 2 and the teeth part 1a of the worm wheel 1 mesh with each other via the opening part 3c.
  • the base end side of the worm shaft 2, as the electric motor 7 side, is rotatably supported by a first bearing 4.
  • the first bearing 4 has a ball interposed between an inner ring and an outer ring that are annular in shape.
  • the outer ring of the first bearing 4 is sandwiched between a step part 3a that is formed on the gear case 3 and a locknut 5.
  • the inner ring of the first bearing 4 is sandwiched between a step part 2b of the worm shaft 2 and a joint on the worm side 6 that is connected to the worm shaft 2. Thereby, movement of the worm shaft 2 in the axial direction is limited.
  • a second bearing 11 is accommodated at the bottom of the gear case 3 via an L-shaped ring 10, as an annular elastic member having an L-shaped cross section.
  • the tip end side of the worm shaft 2 is rotatably supported by the second bearing 11.
  • the second bearing 11 has a ball interposed between an inner ring and an outer ring that are annular in shape.
  • a step part 2c that is formed near the tip end part of the worm shaft 2 is locked with the inner ring of the second bearing 11.
  • a flange part 17 that has a flat end surface 17a is projectingly formed on the outer peripheral surface of the gear case 3 on its end part side.
  • a through hole 13 that is open to face the outer peripheral surface of the second bearing 11 is formed in the flange part 17. An opening part of the through hole 13 that is open in the end surface 17a of the flange part 17 is blocked by a plug 14.
  • a coil spring 12 serving as a biasing member compressed between the tip end surface of the plug 14 and the outer peripheral surface of the second bearing 11 is accommodated in the through hole 13.
  • the coil spring 12 biases the second bearing 11 toward the direction in which a gap between the teeth part 2a of the worm shaft 2 and the teeth part 1a of the worm wheel 1 is reduced. Namely, the coil spring 12 biases the worm shaft 2 toward the worm wheel 1, via the second bearing 11.
  • An inner peripheral surface 3b of the gear case 3 that surrounds the outer peripheral surface of the second bearing 11 is formed to have a long hole shape so that the second bearing 11 can move toward the worm wheel 1 by a biasing force of the coil spring 12.
  • the second bearing 11 is biased toward the worm wheel 1 side by the biasing force of the coil spring 12, and it is free of backlash.
  • the worm shaft 2 tilts by the biasing force of the coil spring 12 by using the first bearing 4 as a fulcrum, and the worm shaft 2 and the output shaft 7a of the electric motor 7 are axially misaligned.
  • This axial misalignment between the worm shaft 2 and the output shaft 7a of the electric motor 7 is permitted by the shaft coupler 100.
  • Fig. 2 is an exploded view of the shaft coupler 100
  • Fig. 3 is a perspective view of the shaft coupler 100
  • Fig. 4 is a plan view of the shaft coupler 100.
  • the shaft coupler 100 is provided with a joint on the motor side 8 that is connected to the output shaft 7a of the electric motor 7, the joint on the worm side 6 that is connected to the worm shaft 2, and a coupling 20 that is provided between the joint on the motor side 8 and the joint on the worm side 6 and is for transmitting rotational torque of the electric motor 7 to the worm shaft 2.
  • the joint on the motor side 8 has an annular base part 31 in which a fit hole 31a, to be press-fitted to the outer peripheral surface on the tip end side of the output shaft 7a of the electric motor 7, is formed, and a plurality of protrusion parts 32 that are formed to protrude from the outer peripheral edge of the base part 31 and that extend in the axial direction.
  • the joint on the motor side 8 is formed by steel material.
  • the joint on the motor side 8 is connected to the output shaft 7a by press-fitting the fit hole 31a to the outer peripheral surface on the tip end side of the output shaft 7a, so that coming-off and turning of the joint on the motor side 8 with respect to the the output shaft 7a can be prevented.
  • the connection method between the output shaft 7a and the joint on the motor side 8 is not limited to the press-fit, and other methods may be used as long as the coming-off and the turning of the joint on the motor side 8 with respect to the the output shaft 7a can be prevented.
  • each of the protrusion parts 32 is formed to have a substantially arc shape, as a whole, around the central axis of the base part 31.
  • the outer peripheral surface of each of the protrusion parts 32 has a pair of plane surface parts 32a that extends in the substantially radial direction.
  • the joint on the worm side 6 has an annular base part 41 in which a fit hole 41a, to be press-fitted to the outer peripheral surface on the base end side of the worm shaft 2, is formed, and a plurality of protrusion parts 42 that are formed to protrude from the outer peripheral edge of the base part 41 and that extend in the axial direction.
  • the joint on the worm side 6 is formed by the steel material.
  • the joint on the worm side 6 is connected to the worm shaft 2 by press-fitting the fit hole 41a to the outer peripheral surface on the base end side of the worm shaft 2, so that the coming-off and the turning of the joint on the worm side 6 with respect to the the worm shaft 2 can be prevented.
  • the joint on the worm side 6 is press-fitted to the outer peripheral surface on the base end side of the worm shaft 2 until an end surface 41b of the base part 41 abuts against a step part 2d of the worm shaft 2 and the inner ring of the first bearing 4.
  • the connection method between the worm shaft 2 and the joint on the worm side 6 is not limited to the press-fit, similarly to the joint on the motor side 8.
  • each of the protrusion parts 42 is formed to have a substantially arc shape, as a whole, around the central axis of the base part 41.
  • the outer peripheral surface of each of the protrusion parts 42 has a pair of plane surface parts 42a that extends in the substantially radial direction.
  • the joint on the motor side 8 and the joint on the worm side 6 are equal in shape and, as illustrated in Fig. 3 and Fig. 4 , arranged to face each other so that the protrusion parts 32 and 42 are arranged alternately at equal intervals in the circumferential direction.
  • the protrusion parts 42 of the joint on the worm side 6 are illustrated by alternate long and short dashed lines.
  • the coupling 20 is formed by a plurality of independent caps 21 that are fitted to the respective protrusion parts 32 of the joint on the motor side 8.
  • the coupling 20 has a divided structure that is formed by the plurality of caps 21.
  • the coupling 20 is formed by the four caps 21 that are equal in number to the protrusion parts 32 of the joint on the motor side 8.
  • the four caps 21 are equal in shape.
  • Fig. 4 is a plan view in which the caps 21 are fitted to the respective protrusion parts 32 of the joint on the motor side 8. With regard to the joint on the worm side 6, only the protrusion parts 42 are illustrated by the alternate long and short dashed lines.
  • Each of the caps 21 has a ring shape whose inner peripheral surface corresponds to the outer peripheral surface of each of the protrusion parts 32, and is fitted to the outer peripheral surface of the protrusion part 32.
  • the cap 21 is formed by a pair of torque transmission parts 22 that is sandwiched between the plane surface part 32a and the plane surface part 42a of the neighboring protrusion parts 32 and 42 of the joint on the motor side 8 and the joint on the worm side 6 and that is for transmitting the rotational torque of the electric motor 7 to the worm shaft 2, an inner peripheral part 23 that couples the end parts on the center side of the pair of torque transmission parts 22, and an outer peripheral part 24 that couples the end parts on the outer side of the pair of the torque transmission parts 22.
  • Each of the torque transmission parts 22 is formed to extend in the substantially radial direction so as to fit in a gap between the neighboring protrusion parts 32 and 42.
  • the torque transmission parts 22 of the respective caps 21 are arranged radially around the output shaft 7a of the electric motor 7 (refer to Fig. 4 ).
  • the rotational torque of the electric motor 7 is transmitted from the protrusion parts 32 of the joint on the motor side 8 via the torque transmission parts 22 of the caps 21 to the protrusion parts 42 of the joint on the worm side 6, and is transmitted to the worm shaft 2.
  • the caps 21 may be fitted to the respective protrusion parts 42 of the joint on the worm side 6, instead of the respective protrusion parts 32 of the joint on the motor side 8. In other words, the caps 21 are fitted to the protrusion parts 32 of the joint on the motor side 8 or to the protrusion parts 42 of the joint on the worm side 6.
  • Each of the caps 21 is formed by a 3-layered structure, in which an elastic member 51 that is flexible and has relatively small rigidity, such as rubber, is sandwiched between a pair of resin members 52 that has relatively large rigidity.
  • the cap 21 is formed by the material having small rigidity and the material having large rigidity, the cap 21 is allowed to have flexible and rigid characteristics. Therefore, the cap 21 functions to transmit the rotational torque of the electric motor 7 to the worm shaft 2 efficiently, and to permit the axial misalignment between the worm shaft 2 and the output shaft 7a of the electric motor 7.
  • Each of the caps 21 may be formed by a 2-layered structure by the elastic member 51 that is flexible and has relatively small rigidity, and the resin member 52 that has relatively large rigidity.
  • the fit hole 31a of the joint on the motor side 8 is press-fitted to the outer peripheral surface on the tip end side of the output shaft 7a of the electric motor 7, so as to connect the joint on the motor side 8 to the output shaft 7a.
  • the fit hole 41a of the joint on the worm side 6 is press-fitted to the outer peripheral surface on the base end side of the worm shaft 2, so as to connect the joint on the worm side 6 to the worm shaft 2.
  • the worm shaft 2 and the output shaft 7a of the electric motor 7 are coupled to each other via the shaft coupler 100.
  • the caps 21 When the caps 21 are fitted to the respective protrusion parts 42 of the joint on the worm side 6, the above-described procedure may be reversed.
  • the caps 21 may be fitted to the protrusion parts 32 of the joint on the motor side 8 or to the protrusion parts 42 of the joint on the worm side 6, depending on an assembling order of the worm shaft 2 and the electric motor 7. Namely, when the electric motor 7 is assembled first, the caps 21 are fitted to the protrusion parts 32 of the joint on the motor side 8 and, when the worm shaft 2 is assembled first, the caps 21 are fitted to the protrusion parts 42 of the joint on the worm side 6.
  • the worm shaft 2 is biased by the coil spring 12 in order to reduce the backlash, and is tilted by using the first bearing 4 as the fulcrum.
  • the worm shaft 2 and the output shaft 7a of the electric motor 7 are axially misaligned, and this axial misalignment is permitted by the coupling 20 of the shaft coupler 100.
  • the conventional integrated-type coupling has such a tendency that tilting torque of the worm shaft 2 increases as the worm shaft 2 is tilted.
  • the coil spring 12 is unable to bias the worm shaft 2 sufficiently, and thus the worm shaft 2 cannot be tilted smoothly and the backlash reduction of the worm reduction gear becomes unstable.
  • the coupling 20 has the divided structure that is formed by the plurality of caps 21.
  • each of the caps 21 moves independently to permit the axial misalignment between the worm shaft 2 and the output shaft 7a. This prevents the tilting torque of the worm shaft 2 from increasing. Further, as the worm shaft 2 tilts smoothly, the backlash of the worm reduction gear is reduced stably. Therefore, the rotational torque of the electric motor 7 can be transmitted to the worm shaft 2 more accurately.
  • the coupling 20 has the divided structure that is formed by the plurality of caps 21, the rotational torque of the electric motor 7 is equally distributed to the respective caps 21 to be transmitted to the worm shaft 2. Therefore, the rotational torque of the electric motor 7 is transmitted to the worm shaft 2 efficiently, and noises are reduced.
  • the caps 21 do not affect each other, which is advantageous for improving its life.
  • the coupling 20 operates in such a manner that the backlash of the worm reduction gear is reduced in a stable manner, and that the rotational torque of the electric motor 7 is transmitted to the worm shaft 2 efficiently.
  • each of the caps 21 has the ring shape whose inner peripheral surface corresponds to the outer peripheral surface of each of the protrusion parts 32.
  • the cap 21 may be formed by the pair of torque transmission parts 22, and the inner peripheral part 23 that couples the end parts on the center side of the pair of torque transmission parts 22, as illustrated in Fig. 5 .
  • the outer peripheral part 24 of the cap 21 may be omitted so that the outer side of the cap 21 is open.
  • the outer peripheral surface on the tip end side of the worm shaft 2, penetrating through the fit hole 41a of the joint on the worm side 6, needs to be configured to face the inner peripheral part 23 of the cap 21, or the outer peripheral surface on the tip end side of the output shaft 7a of the electric motor 7, penetrating through the fit hole 31a of the joint on the motor side 8, needs to be configured to face the inner peripheral part 23 of the cap 21.
  • an inner peripheral surface 23a of the inner peripheral part 23 is formed to have an arc shape corresponding to the outer peripheral surface on the tip end side of the worm shaft 2 or the outer peripheral surface on the tip end side of the output shaft 7a.
  • an annular member that faces the inner peripheral part 23 of the cap 21 may be coupled to the outer peripheral surface on the tip end side of the worm shaft 2 or to the outer peripheral surface on the tip end side of the output shaft 7a, so as to prevent the cap 21 from falling off.
  • each of the joint on the motor side 8 and the joint on the worm side 6 has the four protrusion parts 32 and 42.
  • the number of the protrusion parts 32 and 42 is not limited to four, as long as the protrusion parts 32 and 42 are plural in number. For example, there may be three pieces of the protrusion parts 32 and 42.
  • each of the caps 21 is formed by the 3-layered structure, in which the elastic member 51 that is flexible and has relatively small rigidity is sandwiched between the pair of resin members 52 that has relatively large rigidity.
  • the four caps 21 may be formed by two caps that are formed by elastic material that is flexible and has relatively small rigidity, such as rubber, and two caps that are formed by resin material that has relatively large rigidity.
  • the caps formed by the elastic material and the caps formed by the resin material are fitted to the protrusion parts 32 of the joint on the motor side 8 so that they are alternately arranged in the circumferential direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Power Steering Mechanism (AREA)
  • Gear Transmission (AREA)
EP13751585.4A 2012-02-24 2013-02-04 Dispositif de direction assistée électrique et appareil d'accouplement d'arbres utilisé dans celui-ci Not-in-force EP2818386B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012039177A JP5798946B2 (ja) 2012-02-24 2012-02-24 電動パワーステアリング装置、及びそれに用いられる軸連結器
PCT/JP2013/052502 WO2013125337A1 (fr) 2012-02-24 2013-02-04 Dispositif de direction assistée électrique et appareil d'accouplement d'arbres utilisé dans celui-ci

Publications (3)

Publication Number Publication Date
EP2818386A1 true EP2818386A1 (fr) 2014-12-31
EP2818386A4 EP2818386A4 (fr) 2015-10-28
EP2818386B1 EP2818386B1 (fr) 2018-11-21

Family

ID=49005526

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13751585.4A Not-in-force EP2818386B1 (fr) 2012-02-24 2013-02-04 Dispositif de direction assistée électrique et appareil d'accouplement d'arbres utilisé dans celui-ci

Country Status (5)

Country Link
US (1) US9434405B2 (fr)
EP (1) EP2818386B1 (fr)
JP (1) JP5798946B2 (fr)
CN (1) CN104144842B (fr)
WO (1) WO2013125337A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3135940A1 (fr) * 2015-08-07 2017-03-01 Jtekt Corporation Structure de couplage d'arbre et système de direction assistée électrique
WO2020245474A1 (fr) * 2019-06-04 2020-12-10 Fundación Tekniker Système magnétique de compensation de rigidité
ES2909276A1 (es) * 2020-11-04 2022-05-05 Tejasa Tc S L L Acoplamiento elastico

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5728457B2 (ja) * 2012-10-31 2015-06-03 三木プーリ株式会社 撓み軸継手およびその製造方法
KR101686206B1 (ko) * 2013-04-02 2016-12-13 주식회사 만도 자동차의 전동식 동력 보조 조향장치 및 이의 조립 방법
JP6323132B2 (ja) * 2014-04-09 2018-05-16 日本精工株式会社 トルク伝達用継手及び電動式パワーステアリング装置
KR101597800B1 (ko) * 2014-04-25 2016-02-25 이래오토모티브시스템 주식회사 전동식 파워 스티어링 장치의 모터 커플링
JP2015217704A (ja) 2014-05-14 2015-12-07 株式会社ジェイテクト 電動パワーステアリング装置
KR101576995B1 (ko) 2014-06-09 2015-12-11 한국델파이주식회사 전동식 파워 스티어링 장치의 모터 커플링
JP6384134B2 (ja) 2014-06-11 2018-09-05 オイレス工業株式会社 電動式パワーステアリング装置用の軸連結機構
JP6414665B2 (ja) * 2014-06-18 2018-10-31 株式会社ジェイテクト 動力伝達継手、ウォーム減速機及び電動パワーステアリング装置
WO2016047188A1 (fr) * 2014-09-26 2016-03-31 日本精工株式会社 Joint de transmission de couple et dispositif de direction assistée électrique
JP6332467B2 (ja) 2014-09-26 2018-05-30 日本精工株式会社 トルク伝達用継手及び電動式パワーステアリング装置
DE102015108324A1 (de) * 2015-05-27 2016-12-01 Centa-Antriebe Kirschey Gmbh Elastische Klauenkupplung
DE102016211681B3 (de) * 2016-06-29 2017-09-07 Ford Global Technologies, Llc Getriebeeinheit für ein Kraftfahrzeug
DE202016103675U1 (de) 2016-06-29 2016-07-26 Ford Global Technologies, Llc Getriebeeinheit für ein Kraftfahrzeug
DE102016211682A1 (de) 2016-06-29 2018-01-04 Ford Global Technologies, Llc Getriebeeinheit für ein Kraftfahrzeug
US11015656B2 (en) * 2016-08-08 2021-05-25 Nsk Ltd. Torque transmission joint and electric power steering device
JP6790572B2 (ja) * 2016-08-12 2020-11-25 株式会社ジェイテクト ステアリング装置
EP3453906B1 (fr) * 2016-10-13 2020-12-09 NSK Ltd. Joint de transmission de couple et dispositif de servodirection électrique
KR102635281B1 (ko) * 2017-02-01 2024-02-13 에이치엘만도 주식회사 전동식 동력 보조 조향장치의 감속기
CN106983569A (zh) * 2017-05-11 2017-07-28 广东百晟图电器实业有限公司 一种声波牙刷的传动机构和一种声波牙刷
JP2019182266A (ja) * 2018-04-12 2019-10-24 株式会社ジェイテクト 車両用操舵装置
KR102584761B1 (ko) * 2018-09-03 2023-10-06 에이치엘만도 주식회사 조향장치의 동력 전달부재
CN110576900A (zh) * 2019-09-26 2019-12-17 湖南行必达网联科技有限公司 一种电液转向器和车辆
CN110671436B (zh) * 2019-11-22 2021-10-26 株洲时代新材料科技股份有限公司 轴悬式安装直驱电机用联轴器及其刚度设计方法
WO2024047786A1 (fr) * 2022-08-31 2024-03-07 株式会社ジェイテクト Dispositif de direction

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2301659A (en) * 1941-06-21 1942-11-10 Ricefield Louis Coupling
FR1104652A (fr) * 1954-07-15 1955-11-23 Joint élastique pour l'accouplement d'arbres coaxiaux
DE1208566B (de) * 1956-02-23 1966-01-05 Maria Reich Geb Hellbruegge Elastische Wellenkupplung
JPS54127048U (fr) * 1978-02-24 1979-09-04
FR2453314B1 (fr) * 1979-04-04 1985-11-15 Demag Ag Mannesmann Accouplement a griffes
JPS56166328U (fr) * 1980-05-14 1981-12-09
JPS5861332A (ja) * 1981-10-08 1983-04-12 Nabeya Kogyo Kk たわみ軸継手
GB9812844D0 (en) * 1998-06-16 1998-08-12 Lucas Ind Plc Improvements relating to electrical power assisted steering
JP2001301630A (ja) * 2000-04-25 2001-10-31 Showa Corp 電動パワーステアリング装置
JP4454800B2 (ja) * 2000-06-14 2010-04-21 株式会社ショーワ 電動パワーステアリング装置
JP3888607B2 (ja) * 2001-03-05 2007-03-07 本田技研工業株式会社 電動パワーステアリング装置
JP3988519B2 (ja) * 2001-06-20 2007-10-10 株式会社ジェイテクト 電動式動力舵取装置
JP4007159B2 (ja) * 2002-10-30 2007-11-14 株式会社ジェイテクト 電動パワーステアリング装置及びジョイント
JP4299718B2 (ja) * 2004-04-20 2009-07-22 本田技研工業株式会社 電動パワーステアリング装置
BRPI0512140A (pt) * 2004-05-28 2008-02-12 Oiles Industry Co Ltd mecanismo de acoplamento de eixo
JP5168972B2 (ja) * 2007-03-26 2013-03-27 オイレス工業株式会社 電動式パワーステアリング装置用の軸連結機構
DE102009000014B4 (de) * 2009-01-05 2019-04-25 Robert Bosch Gmbh Kupplungsvorrichtung
JP5048804B2 (ja) 2010-03-31 2012-10-17 日立オートモティブシステムズ株式会社 パワーステアリング装置
JP6149381B2 (ja) * 2012-11-01 2017-06-21 日本精工株式会社 トルク伝達用継手及び電動式パワーステアリング装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3135940A1 (fr) * 2015-08-07 2017-03-01 Jtekt Corporation Structure de couplage d'arbre et système de direction assistée électrique
WO2020245474A1 (fr) * 2019-06-04 2020-12-10 Fundación Tekniker Système magnétique de compensation de rigidité
ES2909276A1 (es) * 2020-11-04 2022-05-05 Tejasa Tc S L L Acoplamiento elastico
WO2022096762A1 (fr) * 2020-11-04 2022-05-12 Tejasa-Tc, S.L.L. Accouplement élastique

Also Published As

Publication number Publication date
EP2818386B1 (fr) 2018-11-21
WO2013125337A1 (fr) 2013-08-29
CN104144842A (zh) 2014-11-12
US20150041241A1 (en) 2015-02-12
CN104144842B (zh) 2016-08-17
JP5798946B2 (ja) 2015-10-21
JP2013173440A (ja) 2013-09-05
EP2818386A4 (fr) 2015-10-28
US9434405B2 (en) 2016-09-06

Similar Documents

Publication Publication Date Title
EP2818386B1 (fr) Dispositif de direction assistée électrique et appareil d'accouplement d'arbres utilisé dans celui-ci
US8777794B2 (en) Geared motor
US9789903B2 (en) Torque transmission joint and electric power steering apparatus
US10738834B2 (en) Joint for torque transmission and worm reduction gear
CN106428192A (zh) 轴连结构造以及电动动力转向装置
JP6652194B2 (ja) トルク伝達用継手及び電動式パワーステアリング装置
EP2518358A1 (fr) Mécanisme d'accouplement d'arbre
JP4952677B2 (ja) 弾性軸継手及び電動式パワーステアリング装置
EP3173646B1 (fr) Raccord de transmission de couple et dispositif de direction assistée électrique
US11104371B2 (en) Steering device
WO2016084403A1 (fr) Accouplement de transmission de couple et dispositif de direction assistée électrique
JP2009108892A (ja) トルク伝達用継手及び電動パワ−ステアリング装置
JP6277895B2 (ja) トルク伝達部材及び駆動軸と被駆動軸との結合部
WO2016047188A1 (fr) Joint de transmission de couple et dispositif de direction assistée électrique
WO2013161244A1 (fr) Mécanisme de connexion d'arbre
JP2009299827A (ja) 弾性軸継手及び電動式パワーステアリング装置
JP5181747B2 (ja) 電動式パワーステアリング装置
JPWO2019022015A1 (ja) トルク伝達用継手および電動式パワーステアリング装置
KR101770899B1 (ko) 댐핑 커플러 및 이를 구비한 감속기
JP5211933B2 (ja) 弾性軸継手及び電動式パワーステアリング装置
JP5256958B2 (ja) 電動式パワーステアリング装置
JP2013249909A (ja) トルク伝達用継手及び電動式パワーステアリング装置
JP5553105B2 (ja) 電動式パワーステアリング装置
JP5915375B2 (ja) トルク伝達用継手及び電動式パワーステアリング装置
JP5077124B2 (ja) トルク伝達用継手及び電動式パワーステアリング装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20140924

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
RA4 Supplementary search report drawn up and despatched (corrected)

Effective date: 20150925

RIC1 Information provided on ipc code assigned before grant

Ipc: F16D 3/68 20060101ALI20150921BHEP

Ipc: B62D 5/04 20060101AFI20150921BHEP

Ipc: F16D 3/12 20060101ALI20150921BHEP

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: KYB CORPORATION

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20170428

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20180709

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SHIMODA, KATSUMI

Inventor name: YOSHIKAWA, SHINRAKU

Inventor name: SHIMIZU, TETSUROU

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602013047122

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1067206

Country of ref document: AT

Kind code of ref document: T

Effective date: 20181215

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20181121

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1067206

Country of ref document: AT

Kind code of ref document: T

Effective date: 20181121

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190321

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181121

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190221

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181121

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181121

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181121

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190221

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181121

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181121

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181121

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190321

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181121

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181121

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190222

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181121

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181121

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181121

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181121

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181121

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602013047122

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181121

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181121

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181121

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181121

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602013047122

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20190221

26N No opposition filed

Effective date: 20190822

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190204

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181121

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181121

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20190228

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190228

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190221

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190903

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190228

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181121

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181121

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20130204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181121